CN109195189B - Dual-card switching method and device - Google Patents

Dual-card switching method and device Download PDF

Info

Publication number
CN109195189B
CN109195189B CN201811167581.2A CN201811167581A CN109195189B CN 109195189 B CN109195189 B CN 109195189B CN 201811167581 A CN201811167581 A CN 201811167581A CN 109195189 B CN109195189 B CN 109195189B
Authority
CN
China
Prior art keywords
card
level
wireless communication
communication module
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811167581.2A
Other languages
Chinese (zh)
Other versions
CN109195189A (en
Inventor
雷代军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fibocom Wireless Inc
Original Assignee
Fibocom Wireless Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fibocom Wireless Inc filed Critical Fibocom Wireless Inc
Priority to CN201811167581.2A priority Critical patent/CN109195189B/en
Publication of CN109195189A publication Critical patent/CN109195189A/en
Application granted granted Critical
Publication of CN109195189B publication Critical patent/CN109195189B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a method and a device for switching double cards. The method comprises the following steps: when the input level of a first signal end of a processor of the electronic equipment is detected to be changed into a first level, a second signal end of the processor is controlled to output a pulse signal to a card detection end of the wireless communication module; according to the pulse signal, a third signal end of the processor controls a switch circuit to be switched to a physical card and a wireless communication module access; when the input level of the first signal end of the processor of the electronic equipment is detected to be changed into a second level, controlling the second signal end of the processor to output a pulse signal to the card detection end of the wireless communication module; according to the pulse signal, the third signal end of the processor controls the switch circuit to be switched to a virtual card and the wireless communication module channel. The method can realize the function of double cards and single standby, expand the application range of the wireless communication module, reduce the product development cost caused by supporting the double cards and needing secondary development, and has simple and convenient operation.

Description

Dual-card switching method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for dual card switching.
Background
With the development of communication technology, wireless communication modules have emerged. The wireless communication module is widely applied to industries such as terminals and wireless gateways, and can enable the terminals to keep a connection state. Since an eSIM card (Embedded Subscriber identity Module) can be remotely configured by writing a card over the air, a user can select a mobile communication carrier to register a connection network. Since the mobile communication operator does not open the number writing of the eSIM card, a dual-card single-standby function of the eSIM card and a conventional SIM (Subscriber identity Module) card needs to be supported during product design.
However, wireless communication modules in the market currently only support a single card, and hardware and software of the wireless communication modules cannot realize a dual-card single-standby function.
Disclosure of Invention
Therefore, it is necessary to provide a dual-card switching method and apparatus capable of switching between a virtual card and a physical card in a wireless communication module, for solving the technical problem that the wireless communication module cannot implement a dual-card single-standby function.
A dual card switching method, the method comprising: when the input level of a first signal end of a processor of the electronic equipment is detected to be changed into a first level, a second signal end of the processor is controlled to output a pulse signal to a card detection end of the wireless communication module; according to the pulse signal, a third signal end of the processor controls a switch circuit to be switched to a physical card and a wireless communication module access; when the input level of the first signal end of the processor of the electronic equipment is detected to be changed into a second level, controlling the second signal end of the processor to output a pulse signal to the card detection end of the wireless communication module; according to the pulse signal, the third signal end of the processor controls the switch circuit to be switched to a virtual card and the wireless communication module channel.
In one embodiment, the method further comprises: when the card communication of the electronic equipment is detected to be in an abnormal state, controlling the second signal end to output a pulse signal; and controlling the switch circuit to switch to the virtual card and the wireless communication module access according to the pulse signal through the third signal end.
In one embodiment, the abnormal state includes any one of the following conditions: not reading any card in the virtual card or the entity card; a virtual card or a physical card read failure; card data is lost after reading the virtual card or the physical card.
In one embodiment, the method further comprises: when the card holder of the physical card is a normally closed card holder and the input level of the first signal end is a first level, the first level is a high level, and when the input level of the first signal end is a second level, the second level is a low level; when the card holder of the physical card is a normally open card holder and the input level of the first signal terminal is a first level, the first level is a low level, and when the input level of the first signal terminal is a second level, the second level is a high level.
In one embodiment, the method further comprises: if the input level of the first signal end is not changed, the system is restarted to be restored to the passage between the virtual card and the wireless communication module.
A dual card switching device comprises a processor, a switch circuit and a wireless communication module; the first signal end of the processor is connected with the card seat of the entity card, the second signal end of the processor is connected with the wireless communication module, the third signal end of the processor is connected with the switch circuit, and the wireless communication module is connected with the switch circuit; when the input level of the first signal end of the processor is changed into a first level, the second signal end outputs a pulse signal to the card detection end of the wireless communication module, and the third signal end controls the switch circuit to be switched to a physical card and a wireless communication module access according to the pulse signal; when the input level of the first signal end of the processor is changed into a second level, the second signal end outputs a pulse signal to the card detection end of the wireless communication module, and the third signal end controls the switch circuit to be switched to a virtual card and a wireless communication module access according to the pulse signal.
In one embodiment, the apparatus further comprises a second signal terminal of the processor outputting a pulse signal when the card communication of the electronic device is in an abnormal state; the third signal end controls the switch circuit to switch to the virtual card and the wireless communication module access according to the pulse signal.
In one embodiment, the physical card holder comprises a normally closed card holder or a normally open card holder; when the card holder of the physical card is a normally closed card holder and the input level of the first signal end is a first level, the first level is a high level, and when the input level of the first signal end is a second level, the second level is a low level; when the card holder of the physical card is a normally open card holder and the input level of the first signal terminal is a first level, the first level is a low level, and when the input level of the first signal terminal is a second level, the second level is a high level.
In one embodiment, the switch circuit includes a single pole double throw switch for switching to the physical card and wireless communication module path or to the virtual card and wireless communication module path.
In one embodiment, the physical card socket includes a detection pin, the detection pin is connected to the first signal terminal of the processor, and the detection pin is configured to output a first level when the physical card is inserted.
According to the double-card switching method and the double-card switching device, the second signal end is controlled to output the pulse signal by detecting the input level change of the first signal end, the third signal end controls the switching circuit to be switched to the virtual card or the entity card channel, the double-card single-standby function is realized under the condition that the existing hardware and software of the wireless communication module are not changed, the application range of the wireless communication module is expanded, the product development cost caused by the need of secondary development for supporting double cards is reduced, and the operation is simple and convenient.
Drawings
FIG. 1 is a diagram of an application environment for a dual card switching method in one embodiment;
FIG. 2 is a flow chart illustrating a dual card switching method according to an embodiment;
FIG. 3 is a diagram of an application environment of a dual card switching method in another embodiment;
FIG. 4 is a timing diagram illustrating a dual card switching method according to one embodiment;
FIG. 5 is a state machine transition diagram of a dual card switching method in one embodiment;
FIG. 6 is a circuit diagram of a dual card switching device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The dual-card switching method provided in the embodiment of the present application may be applied to an application environment as shown in fig. 1. The processor 102 is connected to the switch circuit 104 and the wireless communication module 106, and the switch circuit 104 is connected to the wireless communication module, as shown in fig. 1. The processor 102 may be but not limited to a processor of various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices, the switch circuit 104 may control the wireless communication module in various ways, and the wireless communication module 106 is a communication module having a function of supporting LTE (Long Term Evolution), UMTS (Universal Mobile Telecommunications System), or GPRS (General Packet Radio Service), in which an m.2 wireless communication module is taken as an example in the embodiment of the present application, but the present application is not limited to the m.2 wireless communication module.
In one embodiment, as shown in fig. 2, a dual card switching method is provided, which is exemplified by the application of the method to the processor in fig. 1, and includes the following steps:
step 202, when it is detected that the input level of the first signal terminal of the processor of the electronic device is changed to the first level, controlling the second signal terminal of the processor to output a pulse signal to the card detection terminal of the wireless communication module.
The first signal end of the processor refers to an end of the processor connected with the card socket of the physical card, and is also an end for receiving the SIM _ CD _ SLOT signal. The second signal terminal refers to the terminal of the processor connected to the wireless communication module, and also to the terminal outputting the SIM _ DETECT signal. The first level may be a high level or a low level. The pulse wave of the pulse signal is exemplified by a rectangular wave, but is not limited to a rectangular wave, and the pulse signal may include one, two or more rectangular waves.
Specifically, when the electronic device detects that the input level received by the first signal terminal of the processor of the electronic device changes, i.e., changes to the first level, the second signal terminal of the processor outputs a pulse signal to the card detection terminal of the wireless communication module.
Step 204, according to the pulse signal, the third signal terminal of the processor controls the switch circuit to switch to the physical card and the wireless communication module.
The third signal terminal refers to a terminal of the processor connected to the switch circuit, that is, a terminal outputting the ESIM _ SW signal. The entity card refers to a USIM (Universal Subscriber Identity Module) card or a SIM (Subscriber Identity Module) card. The physical card and wireless communication module path comprises a physical card, a switch circuit and a wireless communication module which are connected in series.
Specifically, after the second signal terminal of the processor outputs the pulse signal, according to the time when the low-level pulse ends, the third signal terminal of the processor outputs an ESIM _ SW signal, and controls the switch circuit to switch to a path between the USIM card or the SIM card and the wireless communication module through the ESIM _ SW signal, thereby switching to the entity card available state.
In this embodiment, initializing the physical card is further included after the third signal terminal of the processor controls the switch circuit to switch to the physical card and the wireless communication module. The initialization of the USIM card or the SIM card comprises the steps that after the electronic equipment supplies power To the USIM card or the SIM card, the SIM card is Reset, the wireless communication module outputs an SIM card clock, the SIM card gives an ATR (Answer To Reset) To the wireless communication module so as To determine the baud rate of communication, and the initialization interaction of the SIM card or the USIM card is carried out.
Step 206, when detecting that the input level of the first signal terminal of the processor of the electronic device is changed to the second level, controlling the second signal terminal of the processor to output a pulse signal to the card detecting terminal of the wireless communication module.
The second level may be a high level or a low level, but the second level is not the same as the first level, and when the first level is a high level, the second level is a low level; when the first level is a low level, the second level is a high level.
Specifically, when the electronic device detects that the input level received by the first signal terminal of the processor of the electronic device changes, i.e., changes from high level to low level, the second signal terminal of the processor outputs a pulse signal to the card detection terminal of the wireless communication module.
In step 208, according to the pulse signal, the third signal terminal of the processor controls the switch circuit to switch to the virtual card and the wireless communication module.
The virtual card is that a conventional SIM card is directly Embedded in an equipment chip, rather than being added to the equipment as an independent removable component, and a user does not need to insert the SIM card or the USIM card, that is, the virtual card is an eSIM card (Embedded Subscriber identity Module) or the like. The virtual card and the wireless communication module passage comprise a virtual card, a switch circuit and a wireless communication module which are connected in series.
Specifically, after the second signal terminal of the processor outputs the pulse signal, the third signal terminal of the processor outputs an ESIM _ SW signal according to the time when the low-level pulse ends, and controls the switch circuit to switch to a path between the ESIM card and the wireless communication module through the ESIM _ SW signal, thereby switching to the virtual card available state.
In this embodiment, initializing the virtual card is further included after the third signal terminal of the processor controls the switch circuit to switch to the path between the virtual card and the wireless communication module. The initialization of the eSIM card comprises the steps that after the electronic equipment supplies power to the eSIM card, the eSIM card is reset, the wireless communication module outputs an eSIM card clock, the eSIM card gives ATR to the wireless communication module so as to determine the baud rate of communication, and the initialization interaction of the eSIM card is carried out.
In the double-card switching method, the second signal end is controlled to output the pulse signal by detecting the input level change of the first signal end, the third signal end controls the switch circuit to be switched to the virtual card or the entity card channel, under the condition that the hardware and the software of the wireless communication module are not changed, the double-card single-standby function can be realized, the application range of the wireless communication module is expanded, the product development cost caused by the need of secondary development for supporting double cards is reduced, and the operation is simple and convenient.
In one embodiment, the dual card switching method further includes: when the card communication of the electronic equipment is detected to be in an abnormal state, controlling the second signal end to output a pulse signal; and controlling the switch circuit to switch to the virtual card and the wireless communication module access according to the pulse signal through the third signal end.
The abnormal state refers to a state in which data of the physical card or the virtual card is not read and used by the electronic device. The abnormal state comprises that any one card in the virtual card or the entity card is not read; a virtual card or a physical card read failure; card data is lost after reading the virtual card or the physical card.
Specifically, when the electronic device detects that the physical card or the virtual card is in a state that data is not read by the electronic device, the electronic device controls the second signal end of the processor to output a low-level pulse or a high-level pulse, and the third signal end of the processor outputs an ESIM _ SW signal according to the end time of the pulse to control the switch circuit to be switched to a path between the virtual card and the wireless communication module, so that the electronic device can read the virtual card.
In the double-card switching method, the abnormal state of the entity card or the virtual card is detected, the second signal end outputs a pulse signal, and the switching circuit is controlled to be switched to the virtual card path, so that the electronic equipment can read the virtual card, and the situation that no card is available when the card communication is unavailable is avoided.
In one embodiment, the abnormal state includes any one of the following: not reading any card in the virtual card or the entity card; a virtual card or a physical card read failure; card data is lost after reading the virtual card or the physical card.
The electronic device is configured to read a virtual card or an entity card, wherein the virtual card or the entity card is not read by the electronic device, and the electronic device is in a card-free state. The failure in reading the virtual card or the entity card means that the electronic device cannot read data in any one of the USIM card, the SIM card, or the eSIM card, that is, the electronic device is in a read failure state. The card data loss after reading the virtual card or the entity card means that the electronic equipment has read the information of any one of the virtual card or the entity card, but the data of the card is lost.
Specifically, when the electronic device is in a state where data in any one of the USIM card, the SIM card, or the eSIM card is not read, data in any one of the USIM card, the SIM card, or the eSIM card cannot be read, or data is read but data is lost, the electronic device controls the second signal terminal of the processor to output a low level pulse or a high level pulse, and the third signal terminal of the processor controls the switch circuit to switch to a path between the virtual card and the wireless communication module according to the end time of the pulse, so that the electronic device can read the virtual card again.
In the above dual card switching method, by detecting the abnormal state of the physical card or the virtual card, a pulse signal can be output through the second signal terminal, and the switching circuit is controlled to be switched to the virtual card path, so that the electronic device can read the virtual card again, and the situation that no card is available when the physical card is in an unavailable state is avoided.
In one embodiment, when the card socket of the physical card is a normally closed card socket and the input level of the first signal terminal is a first level, the first level is a high level, and when the input level of the first signal terminal is a second level, the second level is a low level; when the card holder of the physical card is a normally open card holder and the input level of the first signal terminal is a first level, the first level is a low level, and when the input level of the first signal terminal is a second level, the second level is a high level.
Specifically, the card seat of the entity card may be a normally closed card seat or a normally open card seat. When the card socket of the physical card is a normally closed card socket, and the USIM card or the SIM card is inserted, the detection pin of the card socket springs open, and because the pin is pulled up from the outside, the normally closed card socket outputs a SIM _ CD _ SLOT signal, which is a first level, i.e., a high level, to a first signal terminal. When the USIM card or the SIM card is not inserted or the USIM card or the SIM card is pulled out, the detection pin of the card holder is connected with the anchor, and a second level, namely a low level, is output to the first signal end.
When the card holder of the entity card is a normally open card holder, after the USIM card or the SIM card is inserted, the normally open card holder outputs an SIM _ CD _ SLOT signal which is a first level, namely a low level, to a first signal end; when the SIM of the USIM card is pulled out, the normally open card seat outputs a second level, namely a high level, to the first signal end.
In the above dual card switching method, the input level of the first signal terminal is detected according to the card seat type of the physical card, so that the electronic device can adapt to various situations.
In one embodiment, the dual card switching method further includes: and if the input level of the first signal end is not changed, restarting the system to restore to the passage between the virtual card and the wireless communication module.
Specifically, when the physical card or the virtual card is in an abnormal state, the input level of the SIM _ CD _ SLOT signal received by the first signal terminal does not change, that is, after the USIM card or the SIM card is inserted or pulled out, the SIM _ CD _ SLOT signal received by the first signal terminal is maintained at the first level or the second level, and if the SIM _ CD _ SLOT signal does not change, the electronic device restarts the system to return to the virtual card available state.
In the double-card switching method, when the card reading is abnormal, the electronic equipment restarts the system, and can keep one card in place all the time, so as to avoid that no card is available when the card reading is abnormal.
In one embodiment, as shown in fig. 3 and 4, the dual card handover method is described by taking fig. 3 and 4 as an example. The circuit diagram in fig. 3 includes a processor including an INT1 pin of a first signal terminal, a GPIO2 pin of a second signal terminal, and a GPIO3 pin of a third signal terminal, a switching circuit, a wireless communication module, a USIM card, and an eSIM card. In fig. 4, the USIM card socket is taken as an example of a normally closed type, where the SIM _ CD _ SLOT signal is received by the first signal terminal, the SIM _ DETECT signal is sent by the second signal terminal, i.e., pin GPIO2, and the ESIM _ SW signal is sent by the third signal terminal, i.e., pin GPIO 3. Both the USIM cards in fig. 3 and fig. 4 can be replaced by SIM cards, and the USIM card is taken as an example in this embodiment for description.
Specifically, when the card socket of the USIM card is a normally closed card socket and the USIM card is inserted, the SIM _ CD _ SLOT signal input by the first signal terminal changes from a low level to a high level, and after the INT1 pin of the first signal terminal of the processor of the electronic device DETECTs the level change, the SIM _ DETECT signal is sent to the wireless communication module through the GPIO2 pin of the second signal terminal, where the signal is a low-level pulse or a high-level pulse, and the low-level pulse is taken as an example in fig. 4. According to the pulse end time of the SIM _ DETECT signal, the GPIO3 pin of the third signal end of the processor sends an ESIM _ SW signal to the switch circuit, the ESIM _ SW signal is a low-level signal or a high-level signal, the embodiment in the figure 4 takes the low-level signal as an example, and the switch circuit is controlled to be switched to the USIM card and the wireless communication mode through the ESIM _ SW signal
The path of the block, i.e., the USIM card, is in a usable state, and initialization of the USIM is performed. The initialization comprises the steps that after the electronic equipment supplies power to the USIM card, the USIM card is reset, the wireless communication module outputs a clock of the USIM card, the USIM card gives ATR to the wireless communication module so as to determine the baud rate of communication, and initialization interaction of the USIM card is carried out.
When the USIM card is pulled out, the SIM _ CD _ SLOT signal input by the first signal terminal changes from high level to low level, and after the INT1 pin of the first signal terminal of the processor of the electronic device DETECTs the level change, the SIM _ DETECT signal is sent to the wireless communication module through the GPIO2 pin of the second signal terminal, where the signal is a low-level pulse or a high-level pulse, and the embodiment in fig. 4 takes the low-level pulse as an example. According to the end time of the low-level pulse of the SIM _ DETECT signal, the GPIO3 pin of the third signal terminal of the processor sends an ESIM _ SW signal to the switch circuit, where the ESIM _ SW signal is a low-level signal or a high-level signal, and the ESIM _ SW signal is taken as an example in fig. 4, and controls the switch circuit to switch to a path between the ESIM card and the wireless communication module, that is, the ESIM card is in an available state. The initialization comprises the steps that after the electronic equipment supplies power to the eSIM card, the eSIM card is reset, the wireless communication module outputs an eSIM card clock, the eSIM card gives ATR to the wireless communication module, so that the baud rate of communication is determined, and the initialization interaction of the eSIM card is carried out.
In this embodiment, when the card socket of the USIM card is a normally open card socket and the USIM card is inserted, the SIM _ CD _ SLOT signal input by the first signal terminal changes from a high level to a low level, and after the INT1 pin of the first signal terminal of the processor of the electronic device DETECTs the level change, the SIM _ DETECT signal is sent to the wireless communication module through the GPIO2 pin of the second signal terminal, where the signal is a low-level pulse or a high-level pulse. According to the pulse end time of the SIM _ DETECT signal, the GPIO3 pin of the third signal end of the processor sends an ESIM _ SW signal to the switch circuit and controls the switch circuit to be switched to a path between the USIM card and the wireless communication module through the ESIM _ SW signal, namely, the USIM card is in an available state, and the initialization of the USIM is carried out. The initialization comprises the steps that after the electronic equipment supplies power to the USIM card, the USIM card is reset, the wireless communication module outputs a clock of the USIM card, the USIM card gives ATR to the wireless communication module so as to determine the baud rate of communication, and initialization interaction of the USIM card is carried out.
When the card holder of the USIM card is a normally open card holder, when the USIM card is pulled out, the SIM _ CD _ SLOT signal input by the first signal end is changed from low level to high level, and after the INT1 pin of the first signal end of the processor of the electronic equipment DETECTs the level change, the SIM _ DETECT signal is sent to the wireless communication module through the GPIO2 pin of the second signal end, wherein the signal is a low-level pulse or a high-level pulse. According to the pulse end time of the SIM _ DETECT signal, the GPIO3 pin of the third signal end of the processor sends an ESIM _ SW signal to the switch circuit and controls the switch circuit to switch the access of the eSIM card and the wireless communication module through the ESIM _ SW signal, namely, the eSIM card is in an available state. The initialization comprises the steps that after the electronic equipment supplies power to the eSIM card, the eSIM card is reset, the wireless communication module outputs an eSIM card clock, the eSIM card gives ATR to the wireless communication module, so that the baud rate of communication is determined, and the initialization interaction of the eSIM card is carried out.
In this embodiment, taking the card socket of the USIM card as a normally closed card socket as an example, the SIM _ DETECT pin of the wireless communication module has the following functions:
Figure BDA0001821500460000091
Figure BDA0001821500460000101
namely when the USIM card is inserted, the SIM _ DETECT signal is in a high level; when the USIM card is pulled out, the SIM _ DETECT signal is in a low level.
In this embodiment, taking the card socket of the USIM card as a normally open card socket as an example, the SIM _ DETECT pin of the wireless communication module has the following functions:
Figure BDA0001821500460000102
namely when the USIM card is inserted, the SIM _ DETECT signal is in a low level; when the USIM card is pulled out, the SIM _ DETECT signal is high level.
In this embodiment, taking the example that the pin GPIO2 of the second signal terminal GPIO2 outputs a low-level pulse, the low-level pulse in the table may be replaced by a high-level pulse, and the control logic of the electronic device to the GPIO2 is defined as the following table:
status of state GPIO2 output Min Typ Max
Default state High level 1.26V 1.8V 2.1V
USIM insertion Low level pulse 200ms 500ms 1s
USIM extraction Low level pulse 200ms 500ms 1s
When the electronic device is in the default state, the output of GPI02 remains high, and the minimum value of the high is 1.26V, the typical value is 1.8V, and the maximum value is 2.1V. When the USIM card is inserted or pulled out, a low-level pulse is output, and the pulse lasts for 200 milliseconds in the shortest time, 500 milliseconds in a typical value and 1 second in the maximum value.
In this embodiment, the function definition of the SIM _ DETECT pin is combined, so the requirements for time control are as follows:
Figure BDA0001821500460000103
as shown in fig. 4, tslotThe debounce time of the SIM card connector, which is the minimum value of 50 ms, typically 100 ms, and the maximum value of 200 ms, is the debounce time when the USIM card is inserted or removed. t is tcdThe time for the GPIO2 pin to output a low pulse is controlled by the processor of the electronic device to have a minimum value of 200 milliseconds, typically 500 milliseconds, and a maximum value of 1 second.
In the embodiment, the priority of the USIM card is higher than that of the eSIM card, and when the USIM card is inserted, the USIM card is switched to the USIM card; when the USIM card is pulled out, switching to the eSIM card. I.e. to keep one card in place at all times.
In this embodiment, after the USIM card is inserted, if the electronic device is in a state where data in any one of the USIM card, the SIM card, or the eSIM card is not read, data in any one of the USIM card, the SIM card, or the eSIM card cannot be read, or data in a state where data is read but data is lost, the GPIO2 pin of the processor of the electronic device also outputs a low level pulse and then restores the high level state, that is, the state where the USIM card is pulled out of the eSIM card is simulated, and the processor of the electronic device outputs an eSIM _ SW signal through the GPIO3 pin to control the switch circuit to be switched to the eSIM card access, so as to initialize the eSIM card again. In this embodiment, in a no-card state, that is, in a state where the electronic device cannot read any one of the USIM card, the SIM card, or the eSIM card, the USIM card is inserted to change the SIM _ CD _ SLOT signal to a high level at this time. If the SIM _ CD _ SLOT signal remains unchanged, the system needs to be restarted to recover to the state where the eSIM card is available.
According to the double-card switching method, the GPIO2 pin is controlled to output pulse signals by detecting the input level change of the INT1 pin, the GPIO3 pin controls the switching circuit to be switched to a virtual card or a physical card channel, the double-card single-standby function can be realized under the condition that the existing hardware and software of the wireless communication module are not changed, the application range of the wireless communication module is expanded, the product development cost caused by the need of secondary development for supporting double cards is reduced, and the operation is simple and convenient; and under the abnormal state, the processor of the electronic equipment simulates the state that the USIM card is pulled out, can solve the abnormal state and keep an SIM card to be connected with the circuit.
In one embodiment, as shown in fig. 5, the dual card switching method is described by taking the figure as an example, and the USIM card socket is normally closed. The state machine comprises three states, namely an eSIM card available state, a USIM card available state and a SIM card unavailable state.
When the USIM card is not inserted, the default state of the electronic equipment is an available state of the eSIM card. When the USIM card is inserted, the SIM _ CD _ SLOT signal input from the first signal terminal becomes a high level. When the USIM card is pulled out, the SIM _ CD _ SLOT signal of the first signal end is changed into low level, and meanwhile, the access between the eSIM card and the wireless communication module is switched, so that the eSIM card is in an available state. If the USIM card fails to be read, the electronic equipment processor can also control the switching circuit to be switched to a channel between the eSIM card and the wireless communication module through the third signal terminal. If the eSIM card is also read wrongly, the state is switched to the NO SIM card state. In the state of the NO SIM card, when the USIM card is inserted, the SIM _ CD _ SLOT signal input by the first signal terminal becomes high level, and the access between the USIM card and the wireless communication module is switched at the moment. If the SIM _ CD _ SLOT signal input by the first signal terminal remains unchanged, the system needs to be restarted to switch to the state where the eSIM card is available.
According to the double-card switching method, three states of the double-card switching state machine can realize the double-card single-standby function, and the operation is simple and convenient; and when the abnormal state occurs, the electronic equipment can be kept with one card in place by switching to the available state of the eSIM card or restarting the system, so that the situation that no card is available is avoided.
It should be understood that although the various steps in the diagrams of fig. 1-5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-5 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 6, there is provided a dual card switching apparatus including a processor, a switching circuit, and a wireless communication module; the first signal end of the processor is connected with the card seat of the entity card, the second signal end of the processor is connected with the wireless communication module, the third signal end of the processor is connected with the switch circuit, and the wireless communication module is connected with the switch circuit; when the input level of the first signal end of the processor is changed into a first level, the second signal end outputs a pulse signal to the card detection end of the wireless communication module, and the third signal end controls the switch circuit to be switched to a physical card and a wireless communication module access according to the pulse signal; when the input level of the first signal end of the processor is changed into a second level, the second signal end outputs a pulse signal to the card detection end of the wireless communication module, and the third signal end controls the switch circuit to be switched to a virtual card and a wireless communication module access according to the pulse signal.
The wireless communication module is an m.2 wireless communication module, the processor is a processor of an electronic device, and the processor may be, but is not limited to, processors of various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices. The USIM card in fig. 6 can be replaced by a SIM card, and this embodiment is described by taking the USIM card as an example.
Specifically, an INT1 pin of a first signal terminal of the processor is connected with an SW2 pin of a USIM card socket, a GPIO2 pin of a second signal terminal of the processor is connected with a SIM _ DETECT pin of the wireless communication module, and a GPIO3 pin of a third signal terminal of the processor is connected with the switch circuit. The first level can be high level or low level, but the second level is not the same as the first level, and when the first level is high level, the second level is low level; when the first level is a low level, the second level is a high level.
When the input level of INT1 pin of the first signal end of the processor is changed into the first level, GPIO2 pin of the second signal end outputs a low level pulse or a high level pulse to SIM _ DETECT pin of the wireless communication module, GPIO3 pin of the third signal end controls the switch circuit to switch to the path between the USIM card and the wireless communication module according to the end time of the low level pulse, so that the USIM card is in the available state.
When the input level of the INT1 pin of the first signal end of the processor is changed into a second level, the second signal end GPIO2 pin outputs a low-level pulse or a high-level pulse to the SIM _ DETECT pin of the wireless communication module, and the third signal end GPIO3 pin controls the switch circuit to be switched to a channel between the eSIM card and the wireless communication module according to the end time of the low-level pulse, so that the eSIM card is in an available state.
In this embodiment, initializing the physical card is further included after the pin GPIO3 of the third signal terminal GPIO3 of the processor controls the switch circuit to switch to the physical card and the wireless communication module. The initialization of the USIM card or the SIM card comprises the steps that after the electronic equipment supplies power To the USIM card or the SIM card, the SIM card is Reset, the wireless communication module outputs an SIM card clock, the SIM card gives an ATR (Answer To Reset) To the wireless communication module so as To determine the baud rate of communication, and the initialization interaction of the SIM card or the USIM card is carried out.
In this embodiment, initializing the virtual card is further included after the pin GPIO3 of the third signal terminal GPIO3 of the processor controls the switch circuit to switch to the path between the virtual card and the wireless communication module. The initialization of the eSIM card comprises the steps that after the electronic equipment supplies power to the eSIM card, the eSIM card is reset, the wireless communication module outputs an eSIM card clock, the eSIM card gives ATR to the wireless communication module so as to determine the baud rate of communication, and the initialization interaction of the eSIM card is carried out.
In the double-card switching device, the input level change of the first signal end is detected through the connection relation of the processor, the switch circuit and the wireless communication module, the second signal end is controlled to output the pulse signal, the third signal end controls the switch circuit to be switched to the virtual card or the entity card channel, under the condition that the hardware and the software of the wireless communication module are not changed, the double-card single-standby function can be realized, the application range of the wireless communication module is expanded, the product development cost caused by supporting the double cards and needing secondary development is reduced, and the operation is simple and convenient.
In one embodiment, the apparatus further comprises a second signal terminal of the processor outputting a pulse signal when the card communication of the electronic device is in an abnormal state; the third signal end controls the switch circuit to switch to the virtual card and the wireless communication module access according to the pulse signal.
Specifically, the abnormal state includes any one of the following cases: not reading any card in the virtual card or the entity card; a virtual card or a physical card read failure; card data is lost after reading the virtual card or the physical card. When the card holder of the entity card is in an abnormal state, the pin of the second signal terminal GPIO2 of the processor outputs a low-level pulse or a high-level pulse, and the pin of the third signal terminal GPIO3 of the processor controls the switch circuit to be switched to a channel between the eSIM card and the wireless communication module according to the end time of the pulse, so that the eSIM card is in an available state.
According to the double-card switching device, the abnormal state of the entity card or the virtual card is detected, the second signal end outputs a pulse signal, and the switching circuit is controlled to be switched to the virtual card channel, so that the electronic equipment can read the virtual card, and the situation that no card is available when the card communication is unavailable is avoided.
In one embodiment, the physical card socket comprises a normally closed socket or a normally open socket; when the card holder of the physical card is a normally closed card holder and the input level of the first signal end is a first level, the first level is a high level, and when the input level of the first signal end is a second level, the second level is a low level; when the card holder of the physical card is a normally open card holder and the input level of the first signal terminal is a first level, the first level is a low level, and when the input level of the first signal terminal is a second level, the second level is a high level.
Specifically, the card seat of the entity card may be a normally closed card seat or a normally open card seat. When the card holder of the entity card is a normally closed card holder, and the USIM card or the SIM card is inserted, the detection pin of the card holder is bounced open, and the pin is pulled upwards from the outside, so that the normally closed card holder outputs a first level, namely a high level, to the first signal end. When the USIM card or the SIM card is not inserted or the USIM card or the SIM card is pulled out, the detection pin of the card holder is connected with the anchor, and a second level, namely a low level, is output to the first signal end.
When the card seat of the entity card is a normally open card seat, after the USIM card or the SIM card is inserted, the normally open card seat outputs a first level, namely a low level, to a first signal end; when the SIM of the USIM card is pulled out, the normally open card seat outputs a second level, namely a high level, to the first signal end.
The double-card switching device adjusts the input signal of the first signal end according to the card seat type of the entity card, and enables the electronic equipment to adapt to various conditions.
In one embodiment, as shown in fig. 6, the switching circuit includes a single pole double throw switch for switching to the physical card and wireless communication module path or to the virtual card and wireless communication module path. The USIM card in fig. 6 can be replaced by a SIM card, and this embodiment is described by taking the USIM card as an example.
Specifically, the switch circuit includes a single-pole double-throw switch, one end of the single-pole double-throw switch is connected to the wireless communication module, and the other two ends of the single-pole double-throw switch are respectively connected to the USIM card and the eSIM card. When the GPIO3 pin of the third signal terminal of the processor outputs a second level, the single-pole double-throw switch of the switch circuit is switched to a path between the USIM card and the wireless communication module, so that the USIM card is in an available state; when the GPIO3 pin of the third signal terminal outputs the first level, the single-pole double-throw switch of the switch circuit switches to a path between the eSIM card and the wireless communication module, so that the eSIM card is in an available state.
The double-card switching device is switched to the access of the physical card, the virtual card and the wireless communication module through the single-pole double-throw switch, can realize the function of double-card single standby, and has simple and convenient operation and quick response.
In one embodiment, the physical card socket includes a detection pin, the detection pin is connected to the first signal terminal of the processor, the detection pin is used for outputting a first level when the physical card is inserted, and is used for outputting the second level when the physical card is pulled out.
Specifically, the card socket of the USIM card or the SIM card includes a detection pin, and the card socket includes a detection pin SW2, which is connected to an INT1 pin of the first signal terminal of the processor. When the card socket of the USIM card is a normally closed card socket, the detection pin is used for outputting a first level, i.e. a high level, to an INT1 pin of a first signal terminal of the processor when the USIM card is inserted. When the USIM card is not inserted or the USIM card is pulled out, the detection pin SW2 of the card socket is connected with the ground pin, and the second level, namely the low level, is output to the first signal end.
In this embodiment, when the card socket of the USIM card is a normally open card socket, the detection pin is used for outputting a first level, i.e. a low level, to an INT1 pin of a first signal terminal of the processor when the USIM card is inserted. When the USIM card is not inserted or the USIM card is pulled out, the detection pin SW2 of the card socket is connected with the ground pin, and the second level, namely the high level, is output to the first signal end.
According to the dual-card switching device, the detection pin is connected with the first signal end, and the first signal end of the processor receives different signals through the output level of the detection pin, so that the insertion or extraction state of the USIM card or the SIM card is detected.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A dual card switching method, the method comprising:
when the input level of a first signal end of a processor of the electronic equipment is detected to be changed into a first level, a second signal end of the processor is controlled to output a pulse signal to a card detection end of the wireless communication module; the processor and the wireless communication module are directly connected through GPIO;
according to the pulse end time of the pulse signal, a third signal end of the processor controls a switching circuit to be switched to a path between an entity card and the wireless communication module, the entity card is reset, the wireless communication module is controlled to input an entity card clock, the entity card gives a reset response to the wireless communication module so as to determine the baud rate of communication, and the entity card is initialized and interacted; the processor and the switch circuit are directly connected through GPIO;
when the input level of the first signal end of the processor of the electronic equipment is detected to be changed into a second level, controlling the second signal end of the processor to output a pulse signal to the card detection end of the wireless communication module; the second level is not the same level as the first level;
according to the pulse end time of the pulse signal, a third signal end of the processor controls the switching circuit to be switched to a virtual card and a wireless communication module access, the virtual card is reset, the wireless communication module is controlled to output a virtual card clock, the virtual card gives out a baud rate reset to the wireless communication module so as to determine the communication, and the initialization interaction of the virtual card is carried out.
2. The method of claim 1, further comprising:
when the card communication of the electronic equipment is detected to be in an abnormal state, controlling the second signal end to output a pulse signal;
and controlling the switch circuit to be switched to the virtual card and the wireless communication module access through the third signal end according to the pulse signal.
3. The method of claim 2, wherein the abnormal condition comprises any one of:
not reading any card in the virtual card or the entity card;
a virtual card or a physical card read failure;
card data is lost after reading the virtual card or the physical card.
4. The method of claim 1, further comprising:
when the card holder of the physical card is a normally closed card holder and the input level of the first signal end is a first level, the first level is a high level, and when the input level of the first signal end is a second level, the second level is a low level;
when the card holder of the physical card is a normally open card holder, when the input level of the first signal terminal is a first level, the first level is a low level, and when the input level of the first signal terminal is a second level, the second level is a high level.
5. The method according to claim 1 or 2, characterized in that the method further comprises:
and if the input level of the first signal end is not changed, restarting the system to restore to the passage between the virtual card and the wireless communication module.
6. A dual card switching device comprises a processor, a switch circuit and a wireless communication module;
the first signal end of the processor is connected with the card seat of the entity card, the second signal end of the processor is directly connected with the wireless communication module through GPIO, the third signal end of the processor is directly connected with the switch circuit through GPIO, and the wireless communication module is connected with the switch circuit;
when the input level of the first signal end of the processor is changed into a first level, the second signal end outputs a pulse signal to a card detection end of the wireless communication module, the third signal end controls a switch circuit to be switched to a path between an entity card and the wireless communication module according to the pulse end time of the pulse signal, the entity card is reset, the wireless communication module is controlled to input an entity card clock, the entity card gives a reset response to the wireless communication module so as to determine the baud rate of communication, and the initialization interaction of the entity card is carried out;
when the input level of the first signal end of the processor is changed into a second level, the second signal end outputs a pulse signal to the card detection end of the wireless communication module, the third signal end controls the switch circuit to be switched to a virtual card and the wireless communication module to be communicated according to the pulse end time of the pulse signal, the virtual card is reset, the wireless communication module outputs a virtual card clock, the virtual card resets to the wireless communication module so as to determine the baud rate of communication, and the initialization interaction of the virtual card is carried out; the second level is not the same level as the first level.
7. The apparatus of claim 6, further comprising a second signal terminal of the processor outputting a pulse signal when the card communication of the electronic device is in an abnormal state;
and the third signal end controls the switch circuit to be switched to the virtual card and the wireless communication module access according to the pulse signal.
8. The apparatus of claim 6, wherein the physical card holder is a normally closed card holder or a normally open card holder;
when the card holder of the physical card is a normally closed card holder and the input level of the first signal end is a first level, the first level is a high level, and when the input level of the first signal end is a second level, the second level is a low level;
when the card holder of the physical card is a normally open card holder, when the input level of the first signal terminal is a first level, the first level is a low level, and when the input level of the first signal terminal is a second level, the second level is a high level.
9. The apparatus of claim 6, wherein the switching circuit comprises a single pole double throw switch coupled to the wireless communication module for switching to the physical card to the wireless communication module path or to the virtual card to the wireless communication module path.
10. The apparatus of claim 6, wherein the physical card socket comprises a detect pin, the detect pin connected to the first signal terminal of the processor; the detection pin is used for outputting the first level when the physical card is inserted, and is used for outputting the second level when the physical card is pulled out.
CN201811167581.2A 2018-10-08 2018-10-08 Dual-card switching method and device Active CN109195189B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811167581.2A CN109195189B (en) 2018-10-08 2018-10-08 Dual-card switching method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811167581.2A CN109195189B (en) 2018-10-08 2018-10-08 Dual-card switching method and device

Publications (2)

Publication Number Publication Date
CN109195189A CN109195189A (en) 2019-01-11
CN109195189B true CN109195189B (en) 2021-07-06

Family

ID=64946699

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811167581.2A Active CN109195189B (en) 2018-10-08 2018-10-08 Dual-card switching method and device

Country Status (1)

Country Link
CN (1) CN109195189B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110086491A (en) * 2019-04-30 2019-08-02 北京智芯微电子科技有限公司 SIM and eSIM hardware device for intelligently switching in telecommunication unit
CN110300405A (en) * 2019-07-17 2019-10-01 陕西瑞迅电子信息技术有限公司 A kind of device and method for realizing SIM card switching
CN110532118B (en) * 2019-07-24 2023-05-23 深圳市华奥创智科技发展有限公司 Terminal card abnormality detection device, method, terminal and readable storage medium
CN110753379A (en) * 2019-10-25 2020-02-04 苏州浪潮智能科技有限公司 Double-card implementation method and double-card implementation system for single communication channel equipment
CN113498124B (en) * 2020-03-20 2023-02-28 华为技术有限公司 SIM card and eSIM card switching method and electronic equipment
CN114363455A (en) * 2020-10-13 2022-04-15 成都鼎桥通信技术有限公司 SIM card switching control method, device, equipment and storage medium
CN114915311B (en) * 2021-02-09 2023-05-12 Oppo广东移动通信有限公司 Electronic device and customer premises equipment
CN114915306A (en) * 2021-02-09 2022-08-16 Oppo广东移动通信有限公司 Electronic device, customer premises equipment, and control method of customer premises equipment
CN114915312A (en) * 2021-02-09 2022-08-16 Oppo广东移动通信有限公司 Electronic device and control method
CN114915313B (en) * 2021-02-09 2023-07-14 Oppo广东移动通信有限公司 Electronic device and customer premises equipment
CN113950044B (en) * 2021-09-16 2024-03-29 深圳市优克联新技术有限公司 User identification card identification method, device, terminal equipment and storage medium
CN114884528B (en) * 2022-07-13 2022-12-02 荣耀终端有限公司 SIM card communication circuit, related device and control method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257674A (en) * 2007-02-28 2008-09-03 北京三星通信技术研究有限公司 Double-card interface fast switch apparatus and switch method
CN103491261A (en) * 2013-05-13 2014-01-01 广东欧珀移动通信有限公司 SIM card shearing error detection device, mobile terminal and detection method
CN104185171A (en) * 2014-08-29 2014-12-03 广东欧珀移动通信有限公司 Virtual SIM card realizing method and device
CN106102035A (en) * 2016-05-25 2016-11-09 南京酷派软件技术有限公司 The changing method of embedded user identification card, device, terminal and server
CN106454965A (en) * 2016-08-15 2017-02-22 努比亚技术有限公司 Double-card network switching method and terminal
CN106993285A (en) * 2017-05-12 2017-07-28 东信和平科技股份有限公司 The method that multiple SIM virtual card switches in a kind of SIM card and SIM card
CN107770800A (en) * 2017-09-29 2018-03-06 宇龙计算机通信科技(深圳)有限公司 ESIM card informations management method, equipment and server
CN108141724A (en) * 2015-05-08 2018-06-08 深圳市斯凯荣科技有限公司 For the virtual user identification module of mobile communication equipment
CN108416928A (en) * 2018-05-30 2018-08-17 杭州先锋电子技术股份有限公司 A kind of Internet of Things gas meter, flow meter SIM card automatic switch-over circuit
WO2018182897A1 (en) * 2017-03-28 2018-10-04 Telit Technologies (Cyprus) Ltd. Virtual sim with multiple mobile network operator profiles for operating over multiple wireless ip networks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3253172B1 (en) * 2016-06-01 2019-12-11 Intel IP Corporation Device and method for recovering services from network rejections to wireless communication devices

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257674A (en) * 2007-02-28 2008-09-03 北京三星通信技术研究有限公司 Double-card interface fast switch apparatus and switch method
CN103491261A (en) * 2013-05-13 2014-01-01 广东欧珀移动通信有限公司 SIM card shearing error detection device, mobile terminal and detection method
CN104185171A (en) * 2014-08-29 2014-12-03 广东欧珀移动通信有限公司 Virtual SIM card realizing method and device
CN108141724A (en) * 2015-05-08 2018-06-08 深圳市斯凯荣科技有限公司 For the virtual user identification module of mobile communication equipment
CN106102035A (en) * 2016-05-25 2016-11-09 南京酷派软件技术有限公司 The changing method of embedded user identification card, device, terminal and server
CN106454965A (en) * 2016-08-15 2017-02-22 努比亚技术有限公司 Double-card network switching method and terminal
WO2018182897A1 (en) * 2017-03-28 2018-10-04 Telit Technologies (Cyprus) Ltd. Virtual sim with multiple mobile network operator profiles for operating over multiple wireless ip networks
CN106993285A (en) * 2017-05-12 2017-07-28 东信和平科技股份有限公司 The method that multiple SIM virtual card switches in a kind of SIM card and SIM card
CN107770800A (en) * 2017-09-29 2018-03-06 宇龙计算机通信科技(深圳)有限公司 ESIM card informations management method, equipment and server
CN108416928A (en) * 2018-05-30 2018-08-17 杭州先锋电子技术股份有限公司 A kind of Internet of Things gas meter, flow meter SIM card automatic switch-over circuit

Also Published As

Publication number Publication date
CN109195189A (en) 2019-01-11

Similar Documents

Publication Publication Date Title
CN109195189B (en) Dual-card switching method and device
CN106953654B (en) Universal Integrated Circuit Card detection
KR101679430B1 (en) Method and apparatus for detecting of sim card inserting in a portable terminal
CN105611020B (en) A kind of SIM card detection system and method
CN101925098B (en) Mobile terminal and failure recovering method thereof
CN108495344B (en) Network switching method, device and terminal
CN104349304A (en) Information processing method and electronic equipment
CN114401508B (en) SIM card management method and electronic equipment
CN102572988A (en) Subscriber identity module switching method, device and communication equipment
CN105357049A (en) Network communication functional abnormity processing method, application processor and mobile terminal
RU2764146C1 (en) Terminal and type c interface corrosion protection method
CN113242542B (en) Network searching control method and device of mobile terminal and mobile terminal
CN105407461A (en) Processing method for network communication function abnormality, application processor and mobile terminal
CN102711160A (en) Method and device for information configuration
CN105376777A (en) Processing method of network communication function abnormity and mobile terminal
US8270971B2 (en) Portable terminal device initializing method
CN105376775A (en) Processing method of network communication function abnormity, application processor and mobile terminal
CN105657691A (en) Mobile terminal and data sharing method of double-chip system thereof
CN113836951A (en) Module switching circuit, module switching method and module switching device
CN111654575A (en) Multi-card multi-standby single-pass implementation method and device, electronic equipment and readable storage medium
CN106507455B (en) Control method and mobile terminal
CN105376778A (en) Processing method of network communication function abnormity and mobile terminal
CN216118787U (en) Module switching circuit and module switching device
CN110177173B (en) Switching method and device
CN112788785B (en) Network connection method, terminal and computer storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant